Brake for spinning or twisting spindle



'N V- 1956 E. 5. W000 2,770,092

BRAKE FOR SPINNING OR TWISTING SPINDLE Filed Jan. 11, 1954 INYENTOR.

EARL wooo.

United States Patent BRAKE FOR SPINNING OR TWISTING SPINDLE Earl S. Wood, Whitinsville, Mass., assignor to Whitin Machine Works, Whitinsville, Mass, a corporation of Massachusetts Application January 11, 1954, Serial No. 403,301

1 Claim. (Cl. 57-88) This invention relates to a brake used for stopping and temporarily holding a selected spindle in a spinning or twisting frame. Such spindle stoppage is necessary on the occurrence of a broken end, and must be accomplished while the frame continues in full operation.

It is the general object of this invention to improve and simplify such spindle brakes as heretofore commonly used.

To the attainment of this general object, I provide a spindle brake which is hand-operated, and which will hold the spindle stationary for any desired period without requiring continuous attention from the operator. 1 also provide a spindle brake which is conveniently displaceable from operative position to permit removal or replacement of a spindle.

My improved spindle brake may be applied to existing spinning and twisting frames without machine operations and without interference with the continued operation of the machine.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a sectional side elevation of my improved spindle brake;

Fig. 2 is a plan view thereof;

Fig. 3 is a view similar to Fig. 2 but showing the brake in holding position; and

Fig. 4 is -a detail sectional elevation, taken substantially along the line 44 in Fig. 1.

Referring to the drawings, I have shown a spinning spindle comprising a blade and a whirl 11, both mounted in a spindle base 12 secured in a spindle rail 14 and clamped therein by a nut 15. The rail 14 may be of either fixed or traversing construction.

An extension 20 of the base 12 provides an oil spout having connected passages 21 and 22 through which oil may be supplied to the spindle hearing. A cover 24 is pivoted on a stud 26 threaded into the top of the base extension 20. This cover may be swung aside to uncover the oil passage 21 when desired, and may be secured in covering position by a pivoted latch or keeper 27.

The parts thus far described are in general of a commercial type and in them-selves form no part of the present invention.

The under surface of the cover 24 is grooved as indicated at 30 in Fig. 4 to loosely receive the base 32 of a braking member L having an upright portion 34 and a flat top portion 35. The member L is preferably resilient.

A block 36 of suitable brake material is secured below the flat top portion 35 and is positioned to engage the cylindrical side wall W of the upper end portion of the whirl 11. The block 36 also functions as a doifer guard.

The lower portion 32 of the braking member L has 2,770,092 iPatented Nov. 13, 1956 'ice an opening to receive the lower end of the stud 26, and the cover 24 has a notched extension 38 which receives the upright portion 34 of the braking member L and assists in preventing relative angular movement between the braking member L and the cover 24.

A hand lever 40 is pivoted on the upper end portion of the stud 26 and is preferably frictionally held by a spring washer 41. The hand lever 40 has a cam portion 42 engaging the upright portion 34 of the braking member L. As the lever 40 is swung from the position shown in Fig. 2 to that shown in Fig. 3, the part 36 of the braking member L will be yieldingly forced into engagement with the wall W of the spindle whirl 11.

The cam portion 42 of the lever 40 has a substantially concentric portion 43 by which the brake block 36 will be maintained in yielding engagement with the whirl .11. The cam portion 42 also has a stop or abutment 44 which conveniently locates the lever 40 in the inoperative position shown in Fig. 2.

With the construction above described, the associated spindle may be quickly and easily stopped by merely swinging the hand lever 40 from the position shown in Fig. 2 to that shown in Fig. 3, and the .parts will remain in the latter position until manually returned to the po sition shown in Fig. 2.

For toiling purposes, the latch 27 is swung upward and the cover 24 and all parts associated therewith are swung about the axis of the stud 26 to uncover the oil passage 21. A similar swinging movement of the cover 24 and associated parts will swing the brake element 36 to a displaced position in which it does not interfere with removal or replacement of the spindle in the base 12.

It will also be noted that all parts of the brake are mounted on the spindle base and are movable therewith, so that traversing of the spindle and spindle base is not interfered with.

A special advantage of my improved brake is that the operator does not have to use either hand to hold the braking member in operative position, but is entirely free to move about for any desired purpose, as soon as the handle 40has been moved to the holding position shown in Fig. 3.

Having thus described my invention and the advantages thereof, I do not Wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, hot what I claim is:

In a textile machine having spindles comprising blades and whirls and having spindle bases therefor provided with offset and upwardly-extending oil spouts, that improvement for each spindle which consists in an oil cover mounted on a fixed vertical pivot, a braking member which is resilient in part and which is mounted to swing about said vertical pivot with said cover manually-releasable means to lock said cover and said braking member together in a horizontal operative angular position, a brake element mounted on said braking member and movable towards said spindle to engage a side wall of said whirl, and a cam lever mounted on said fixed vertical pivot and manually swingable horizontally relative to the cover and braking member to engage an intermediate portion of said braking member and effective to force said brake element against said whirl.

References Cited in the file of this patent UNITED STATES PATENTS 211,218 Buttrick Jan. 7, 1879 1,539,442 Sweet et ral. May 26, 1925 2,034,192 Jackson Mar. 17, 1936 2,388,900 Brooksieker Nov. 13, 1945 2,411,127 Burnham Nov. 12, 1946 

